KR20000032974A - Apparatus for changing heating capacity of ceramic heater for air conditioner - Google Patents

Abstract

PURPOSE: An apparatus is provided to change heating capacity of a ceramic heater as well as to show high heating capacity by combining plural ceramic heaters to an air conditioner. CONSTITUTION: Fifteen ceramic heaters(70) are arranged on a left heater assay(200), and the other fifteen ceramic heaters are arranged on a right heater assay(300) by two steps. Electric power is fed to each ceramic heater, and the ceramic heaters are tied into three to constitute a connecting line of a three-phase Y form. External power is fed to the thirty ceramic heaters to generate heat from a PTC(positive temperature coefficient) resistance. Air is heated by the ceramic heaters through the rotational force of a ventilating fan to show the heating capacity of 50KW. However, the PTC resistance shows the heating capacity of 24KW if nine ceramic heaters are arranged by two steps on the left heater assay and six ceramic heaters on the right heater assay by a single step.

Description

Variable heating capacity of ceramic heater for air conditioner

The present invention relates to an air conditioner equipped with an electric heater (hereinafter, referred to as a ceramic heater) having ceramic characteristics, and in particular, for an air conditioner capable of varying the heating capacity while showing a high heating capacity by combining a plurality of ceramic heaters. It relates to a variable heating capacity of the ceramic heater.

As shown in FIG. 1, the fixing structure of the conventional ceramic heater for the air conditioner includes a front fixing plate 110, a rear fixing plate 120, and left and right fixing plates 130 and 140 to form an exterior, and the front fixing plate 110. ), The rear fixing plate 120 and the left and right fixing plate (130, 140) on the upper side to form the appearance and at the same time to cover the interior, the safety net (150, seated on the left and right fixing plate (130, 140) ) Is installed, and the upper and lower sides of the front fixing plate 110 and the rear fixing plate 120 are formed with bending 111 and 121 to maintain the overall strength.

The left and right side fixing plates 130 and 140 are configured to have upper and lower ends, and fixing holes 131a and 141a are fixed to upper and lower ends of the upper and lower fixing plates 110 and 120, respectively. Is formed, the upper surface fixing plate 140, the thermostat 145 is a safety device is installed through the connection member 143, the conductor.

A plurality of ceramic heaters 170 having ceramic characteristics are fixed to the left and right fixing plates 130 and 140 by using a PTC (Positive Tempertature Coefficent) STONE (hereinafter, referred to as a resistor), which is a kind of semiconductor device. The heater 170 has a long axis in which the left and right sides are not separated, and both terminals of the ceramic heater 170 are fitted to the integrated insulating rubber 171 inserted into the left and right fixing plates 130 and 140.

Upper and lower insulating rubbers 160 and 162 are reinforced and supported in the middle of the ceramic heater 170 to prevent deformation, and the upper insulating rubber 160 is inserted into the fixing bar 161 to be positioned below the ceramic heater ( 170 is formed between the concave-convex shape (160a) that can be inserted between, the lower insulating rubber 162 is composed of the concave-convex shape (162a) that can be inserted between the ceramic heater 170 located above the front The groove 164 is formed to be fitted to the fixing plate 110 and the rear fixing plate 120.

In the conventional ceramic heater for the air conditioner configured as described above, when an external incoming power (three-phase 380V) is applied to both ends of the ceramic heater 170 mounted in the heater case through the power input line 180, the semiconductor element in the ceramic heater 170 is provided. A PTC resistor, which is a kind of heat, is radiated from heat transfer fins (aluminum material) that is tightly fixed to both ends of the resistor, and is heated while passing air through the ceramic heater 170 by the rotational force of the air conditioner blowing fan (not shown). Perform the heating function.

However, in such a conventional ceramic heater, it is necessary to secure the insulation distance between each ceramic heater 170 at the potential of both ends exposed in the configuration of the ceramic heater 170, the wiring configuration is complicated, the ceramic heater 170 It is impossible to remove and add ceramic heater 170 in the future because potential exposure of both ends is impossible, so it is difficult to show high heating capacity, and the center of heater is supported by rubber (160,162), which causes deformation (bending) at the center. There was a problem.

Accordingly, the present invention has been made in order to solve the above-mentioned conventional problems, and a plurality of ceramic heaters are formed by separating the ceramic heaters having a multi-stage (two-stage) configuration to the left and the right by forming an insulating structure, and then, a plurality of ceramic heaters. Of 3 phases Y type wires are combined to form 3 phase Y type wires independently to remove and add ceramic heaters, thus showing high heating capacity and heating capacity of ceramic heaters for air conditioners that can change the heating capacity. The object is to provide a variable device.

Another object of the present invention is to generate a plurality of ceramic heaters constituting the three-phase Y-type connection to each of the three to generate a heat independently, so that the heating temperature is uniform, it is possible to operate sequentially in each independent connection to reduce the starting current It is to provide a variable heating capacity of the ceramic heater for the air conditioner with excellent safety.

In order to achieve the above object, the apparatus for varying the heating capacity of a ceramic heater for an air conditioner according to the present invention includes a front and rear fixing plate and a left and right fixing plate in the air conditioner ceramic heater seated and fixed inside the left and right fixing plates. A plurality of ceramic heaters are installed in multiple stages on the left and right sides of the middle fixing plate installed in the middle part between the plurality of ceramic heaters. The heating capacity is variable by controlling the number of the ceramic heaters installed in multiple stages between the left and right fixing plate and the middle fixing plate. It is characterized by.

1 is an exploded perspective view schematically illustrating a fixing structure of a conventional ceramic heater for an air conditioner;

2 is an exploded perspective view schematically showing a fixing structure of a ceramic heater for an air conditioner according to the present invention;

3 is a plan view schematically illustrating a fixing structure and a connection method of a ceramic heater for an air conditioner according to the present invention;

4 is an arrangement diagram of the ceramic heater for an air conditioner according to the present invention;

5 is a drawing of the incoming power of the ceramic heater exhibiting a heating capacity of 50 KW in the present invention;

6 is a combined connection diagram of a ceramic heater constituting a three-phase Y-shaped connection in FIG. 5;

7 is a drawing of the incoming power supply of the ceramic heater exhibiting a heating capacity of 40,32KW in the present invention,

FIG. 8 is a combined connection diagram of ceramic heaters constituting a three-phase Y-shaped connection in FIG. 7,

9 is an input power connection diagram of a ceramic heater having a heating capacity of 32,24 KW in the present invention;

FIG. 10 is a combined connection diagram of ceramic heaters constituting a three-phase Y-shaped connection in FIG. 9;

11 is a wiring diagram of the incoming power of the ceramic heater exhibiting a heating capacity of 24 KW in the present invention;

FIG. 12 is a combined connection diagram of a ceramic heater constituting a three-phase Y-shaped connection in FIG. 11. FIG.

<Description of the code | symbol about the principal part of drawing>

10: front fixing plate 20: rear fixing plate

30: seat fixing plate 34: seat fixing plate air hole

40: right side fixing plate 44: right side fixing plate air hole

60: middle fixing plate 64: middle fixing plate air hole

70: ceramic heater 71,73,75: insulating rubber

200: left heater assay 300: right heater assay

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 and 3, there is a front fixing plate 10, a rear fixing plate 20, and left and right fixing plates 30 and 40 to form an appearance, and the front and rear fixing plates 10 and 20, and Safety nets 50 seated on the front and rear fixing plates 10 and 20 and the left and right fixing plates 30 and 40 are formed on the upper sides of the left and right fixing plates 30 and 40 to cover the interior and at the same time. The intermediate part of the left and right side fixing plates 30 and 40 is provided with an intermediate fixing plate 60 to prevent deformation of the central part.

A plurality of insulating structures are formed between the seat fixing plate 30 and the intermediate fixing plate 60 and between the right fixing plate 40 and the intermediate fixing plate 60 by using a PTC resistor, which is a kind of semiconductor device. Six ceramic heaters 70 are separately seated and fixed, and both terminals of the ceramic heaters 70 are each insulated rubber (inserted into the left and right side fixing plates 30 and 40 and the intermediate fixing plate 60). 71, 73, 75 is inserted into the seat, the insulating rubber (71, 73, 75) is formed with the insertion groove (75a) to be inserted into the left, right surface fixing plate (30, 40) and the intermediate fixing plate (60). .

Upper and lower ends of the front and rear fixing plates 10 and 20 are formed with bendings 11 and 21 to maintain overall strength, and the left and right fixing plates 30 and 40 are formed of upper and lower ends, respectively. 10), fixing holes 31 and 41 to which fastening screws 31a and 41a are fixed to upper and lower ends of the rear fixing plate 20 are formed.

The upper left and right surface fixing plates 30 and 40 are formed of irregularities 30a and 40a so that the respective insulating rubbers 71 and 75 are easily inserted, and the thermostat 37, which is a safety device, is made of a non-conductor (plastic). The connecting member 33 and the connecting fixing member 35 are installed as a medium, and the lower left and right fixing plates 32 and 42 have an uneven shape so that the respective insulating rubbers 71 and 75 are easily inserted. 42a), and air holes 34 and 44 are formed to minimize the loss of air volume due to the rotation of the blower fan (not shown) during the heating and cooling operation of the air conditioner.

The middle fixing plate 60 is composed of upper and lower ends, and fixing holes 61 are formed at the upper and lower ends of the fixing holes 61 to be fixed to the front fixing plate 10 and the rear fixing plate 20. The upper and lower middle fixing plates 60 and 62 are formed in an uneven shape (not shown) so that each of the insulating rubbers 73 can be easily inserted, and is rotated by a blowing fan (not shown) during the heating and cooling operation of the air conditioner. Air holes 64 are formed to minimize the loss of air volume.

On the other hand, reference numeral 80 is a power input line for separately inputting the external incoming power (3-phase 380v) to the ceramic heater 70, respectively.

As shown in FIG. 3, between the seat fixing plate 30 and the intermediate fixing plate 60, a plurality of left ceramics (for example, eight) that are fixed in four rows of four in the upper and lower portions in two stages (two stages). The upper and lower ceramic heaters 70 in one row (two) of the heaters 70 are connected to the R phase of the external drawing power supply (three phases 380 V), and the two rows (two) of the upper and lower ceramic heaters ( 70) S phase is connected to S phase of external inlet power supply (3 phase 380V), and 3 rows (two phases) of upper and lower ceramic heaters 70 T phase is connected to T phase of external inlet power source (3 phase 380V), respectively. 3 phase Y type wiring, and one of the four rows (two) of the upper and lower ceramic heaters 70 is the R phase of the external input power supply (3 phase 380V) and the other is the external input power supply ( It is connected to S phase of 3 phase 380V).

In addition, between the right surface fixing plate 40 and the middle fixing plate 60, one row in the middle of the plurality of right ceramic heaters 70 (for example, eight) fixed in four rows of three upper and lower four columns in two stages. The two phases of the upper and lower ceramic heaters 70 R phases are connected to the R phase of the external inlet power supply (three phases 380 V), and the two columns of the two phases of the upper and lower ceramic heaters 70 S phases are the external inlet power sources. Three phase (380V) is connected to S phase, and three rows (two) of upper and lower ceramic heaters (70) T phase are connected to T phase of external incoming power supply (three phases 380V), respectively, to form an independent three-phase Y type. Four rows (one) of the lower ceramic heaters 70 are connected to the T phase of the external inlet power supply (three phases 380 V), and the left and right four columns (two) of the upper and lower ceramic heaters 70 are connected. In addition, it constitutes independent three-phase Y type wiring.

As shown in FIG. 4, heater assays 200 and 300 in which 6 to 15 ceramic heaters 70 are disposed in two stages on the left and right sides of the middle fixing plate 60 are respectively disposed on the left and right sides. A plurality of ceramic heaters 70 (for example, 6 to 15) disposed in parallel to each other and arranged inside the left and right heater assays 200 and 300 are removed, and the heating capacity of the air conditioner is 50KW. Can be changed to 40KW, 32KW, 24KW respectively.

Hereinafter, the effect of the heating capacity variable device of the ceramic heater for the air conditioner configured as described above will be described.

First, the fixed structure of the ceramic heater 70 will be described. A plurality of ceramic heaters 70 (for example, 6 to 30) formed with an insulating structure using a PTC resistor, which is a kind of semiconductor element, are formed at both ends. The potential is inserted between the left and right fixed plates 30 and 40 and the respective insulating rubbers 71, 73 and 75 inserted into the intermediate fixed plates 30 and 40, and between the left and right fixed plates 30 and the intermediate fixed plate 60. Between the fixing plate 40 and the intermediate fixing plate 60, 6-15 pieces in two stages are separately seated and fixed.

The left and right side fixing plates 30 and 40 are fixed using fastening screws 31a and 41a to the front and rear fixing plates 10 and 20 on which bendings 11 and 21 are formed to maintain overall strength. The fixing plate 60 is also fixed to the front and rear fixing plates 10 and 20 using fastening screws 61a, and an upper portion of the seat fixing plate 30 of the insulator (plastic) is insulated from the seat fixing plate 30. After installing the connection member 33, and then install a thermostat (37), a safety device, and covers the safety net (50).

Next, the wiring method of the ceramic heater 70 fixed as described above will be described, the left ceramic is fixed in eight columns in four rows of four in each of the upper and lower four in two stages between the seat fixing plate 30 and the middle fixing plate 60. Among the heaters 70, one row (two) of the upper and lower ceramic heaters 70 is connected to the R phase of R phase of the external drawing power supply (3 phase 380V), and the two rows (two) of the upper and lower ceramic heaters. The 70 is connected to the S phase of the external input power supply (3-phase 380V), and the three-phase (two) upper and lower ceramic heaters 70 are connected to the T phase of the external input power supply (3-phase 380V). As the phases are connected to each other, as shown in FIG. 5, an independent three-phase Y-type connection is formed, and one of the four rows (two) of the upper and lower ceramic heaters 70 is connected to the external inlet power source (three phases 380V). The other on R phase is connected to S phase of external incoming power supply (3-phase 380V).

In addition, between the right surface fixing plate 40 and the middle fixing plate 60, the upper and lower ceramics of one row (two) are located in the middle of the right ceramic heater 70 in which seven upper and lower four columns are fixed in three rows in the upper and lower four columns. The heater 70 is connected to the R phase of the external drawing power supply (three phase 380V), and the two-phase (two) upper and lower ceramic heaters 70 are connected to the S phase of the external drawing power supply (three phase 380V). S phases are connected, and three columns (two) of the upper and lower ceramic heaters 70 are connected to the T phase of the external inlet power source (three phases 380V), respectively, as shown in FIG. The four-column (one) lower ceramic heater 70 is connected to the T phase of the external drawing power supply (three-phase 380V), and the four left-column (two) upper and lower ceramic heaters ( 70) together with the independent three-phase Y-shaped wiring.

As shown in FIG. 4, heater assays 200 and 300 having 6 to 15 ceramic heaters 70 fixed therein in two stages on the left and right sides of the middle fixing plate 60 as described above are illustrated in FIG. 4. 2 parallel to each other and the number of ceramic heaters 70 disposed in the left and right heater assays (200, 300) is deleted and added to change the heating capacity of the air conditioner to 50KW, 40KW, 32KW, 24KW, respectively.

First, as shown in FIGS. 5 and 6, the 15 ceramic heaters 70 are arranged in two stages in the left heater assay 200 to exhibit a heating capacity of 50 KW, and the right heater assay 300 is also illustrated in FIG. As shown in Figs. 5 and 6, 15 ceramic heaters 70 are arranged in two stages, and then each individual (all, 30) ceramic heaters 70 are shown in Fig. 5, as shown in Fig. 5. 6 and the three ceramic heaters 70 are combined to form a three-phase Y-type connection, and then 16, 17, 0, and P power inputs are input to the 30 ceramic heaters 70. When an external drawing power supply 380V on the RST three phase is applied through the line 80, a PTC resistor, which is a kind of semiconductor element in the ceramic heater 70 connected to the RST of the external drawing power supply 380V, respectively, generates heat and dissipates heat. At this time, the air is heated while passing through the ceramic heater 70 by the rotational force of the air conditioner blowing fan (not shown). It exerts ability.

First, as shown in FIGS. 7 and 8, the 12 ceramic heaters 70 are arranged in two stages in the left heater assay 200 in order to exhibit a heating capacity of 40 KW, and the right heater assay 300 is also illustrated in FIG. As shown in FIG. 7 and FIG. 8, 12 ceramic heaters 70 are arranged in two stages, and then each individual (all, 24) ceramic heaters 70 are shown in FIG. 8 and the ceramic heaters 70 are combined three by three to form a three-phase Y-type connection, and then 16, 17, 0, P power inputs are input to the 24 ceramic heaters 70. When an external drawing power supply (380V) of the RST three phase is applied through the line 80, the PTC resistor, which is a kind of semiconductor element, in the ceramic heater 70 generates heat and dissipates heat, thereby rotating the air conditioner blowing fan (not shown). The air is heated while passing through the ceramic heater 70 to exhibit a heating capacity of 40KW.

Next, as shown in FIGS. 7 and 8, the 12 ceramic heaters 70 are disposed in two stages in the left heater assay 200 and the right heater assay 300 is provided to exhibit a heating capacity of 32 KW. As shown in Figs. 9 and 10, nine ceramic heaters 70 are arranged in two stages, and then each individual (all and 21) ceramic heaters 70 are shown in Figs. As shown in Figs. 8 and 10, power is supplied to one phase and three ceramic heaters 70 are combined to form a three-phase Y-type connection, and then the 21 ceramic heaters 70 are connected to 16, 17, When an external inlet power source (380V) of RST three phase is applied through the power input line 80 of 0, P, a PTC resistor, which is a kind of semiconductor element, in the ceramic heater 70 generates heat and dissipates heat, resulting in a heating capacity of 32 KW. Exert.

Next, as shown in FIGS. 9 and 10, nine ceramic heaters 70 are arranged in two stages in the left heater assay 200 to exhibit a heating capacity of 24 KW, and the right heater assay 300 is disposed in the two stages. As shown in Figs. 11 and 12, six ceramic heaters 70 are arranged in one stage, and each individual (all, 15) ceramic heaters 70 are shown in Figs. 9 and 11 as shown in Figs. After powering up one phase and combining three ceramic heaters 70 as shown in FIGS. 10 and 12 to form a three-phase Y-type connection, the ceramic heaters 70 are connected to 15 ceramic heaters 70 and 17. When an external inlet power source (380V) of RST 3 is applied through the power input line 80 of 0, P, the PTC resistor, which is a kind of semiconductor element in the ceramic heater 70, generates heat and dissipates heat, thus heating capacity of 24KW. Exert.

According to the apparatus for varying the heating capacity of the ceramic heater for an air conditioner according to the present invention as described above, a plurality of ceramic heaters capable of forming a multi-stage (two-stage) structure by forming an insulating structure are separated and arranged to the left and right sides. In addition, by combining three ceramic heaters three by three, each three-phase Y type wiring can be configured independently, so that the ceramic heater can be easily deleted and added, showing high heating capacity and variable heating capacity. Since a plurality of ceramic heaters constituting the Y-type wiring are grouped three by three to generate heat independently, the heating temperature is uniform, and each independent connection can be operated sequentially, thereby reducing safety of the starting current.

Claims (2)

In the ceramic heater for air conditioner which is fixed to the inside of the front and rear fixing plate and the left and right fixing plate, A plurality of ceramic heaters are installed in multiple stages on the left and right sides of the middle fixing plate installed in the middle portion between the left and right surface fixing plates, and the number of ceramic heaters installed in multiple stages between the left and right fixing plates and the middle fixing plate is adjusted. Variable heating capacity of the ceramic heater for an air conditioner, characterized in that for changing the heating capacity. The method of claim 1, The plurality of ceramic heaters are combined by three, and are connected in a three-phase Y connection method in which R-phase, S-phase, and T-phase, respectively, of three-phase inlet power supply are connected, and can be connected up to 6 to 30 in parallel. Variable heating capacity of ceramic heater for air conditioner.